Extended Data Fig. 5: Power-dependent pump-probe studies of visible-light transient absorption spectroscopy from Au/Al2O3 heterostructures.
From: Ultrafast hot-hole injection modifies hot-electron dynamics in Au/p-GaN heterostructures

a, Power-dependent dynamics of the transient bleach at 550 nm from 100 μW to 400 μW pump power. b, Power-dependent differential transient absorption spectra (λprobe = 450 – 750 nm) from Au/p-GaN heterostructures cut at 350 fs.